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EP0283560A3 - Magnetic tape cassette - Google Patents

Magnetic tape cassette Download PDF

Info

Publication number
EP0283560A3
EP0283560A3 EP87115191A EP87115191A EP0283560A3 EP 0283560 A3 EP0283560 A3 EP 0283560A3 EP 87115191 A EP87115191 A EP 87115191A EP 87115191 A EP87115191 A EP 87115191A EP 0283560 A3 EP0283560 A3 EP 0283560A3
Authority
EP
European Patent Office
Prior art keywords
spring
magnetic tape
polypropylene
slack limiter
pair
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP87115191A
Other languages
German (de)
French (fr)
Other versions
EP0283560A2 (en
Inventor
Manufacturing Corporation Koller (A Wisconsin Corporation)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koller Manufacturing Corp (a Wisconsin Corp
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US07/030,698 external-priority patent/US4770367A/en
Application filed by Individual filed Critical Individual
Publication of EP0283560A2 publication Critical patent/EP0283560A2/en
Publication of EP0283560A3 publication Critical patent/EP0283560A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
    • G11B23/04—Magazines; Cassettes for webs or filaments
    • G11B23/08—Magazines; Cassettes for webs or filaments for housing webs or filaments having two distinct ends
    • G11B23/087—Magazines; Cassettes for webs or filaments for housing webs or filaments having two distinct ends using two different reels or cores

Landscapes

  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Tape Measures (AREA)
  • Springs (AREA)

Abstract

A magnetic tape cassette has an improved reel spring (16), slack limiter and tape guide. The reel spring (16) has a generally rectangular shape with first and second parallel edges extending substantially along its entire length. A flat, central base portion of the spring is bounded by a pair of transition portions which extend at an angle out of the plane of the base. A pair of outer end portions set at a sharper angle to the base complete the spring configuration. A polypropylene slack limiter (76) applies a preloaded tension on the magnetic tape. The polypropylene eliminates the need for laminating a separate bearing material to the slack limiter. The tape guide has a semi-cylindrical, stainless steel insert (94) attached to a plastic mounting core (92). The core is fastened to the cassette housing.
EP87115191A 1987-03-25 1987-10-16 Magnetic tape cassette Withdrawn EP0283560A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US30698 1987-03-25
US07/030,698 US4770367A (en) 1987-03-25 1987-03-25 Magnetic tape cassettes
US07/053,348 US4773615A (en) 1987-03-25 1987-05-22 Magnetic tape cassettes
US53348 1998-04-01

Publications (2)

Publication Number Publication Date
EP0283560A2 EP0283560A2 (en) 1988-09-28
EP0283560A3 true EP0283560A3 (en) 1990-04-25

Family

ID=26706353

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87115191A Withdrawn EP0283560A3 (en) 1987-03-25 1987-10-16 Magnetic tape cassette

Country Status (7)

Country Link
US (1) US4773615A (en)
EP (1) EP0283560A3 (en)
JP (1) JPH09384U (en)
KR (1) KR0131208B1 (en)
CN (1) CN1011744B (en)
DE (1) DE283560T1 (en)
ES (1) ES2008357A6 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5263659A (en) * 1987-03-25 1993-11-23 The Koller Group, Inc. Reel spring for magnetic tape cassettes
US4845820A (en) * 1987-05-22 1989-07-11 Koller Manufacturing Corporation Process for making cassette spring
JPH0171383U (en) * 1987-10-29 1989-05-12
US5029035A (en) * 1989-03-09 1991-07-02 Overland Bolling Company Tape guide for guiding magnetic tape in a videotape cassette
US5005780A (en) * 1990-01-02 1991-04-09 Koller Manufacturing Corporation Reel spring for magnetic tape cassettes
US5201476A (en) * 1990-05-11 1993-04-13 Paul J. Gelardi Welded video cassette
US5092536A (en) * 1990-05-11 1992-03-03 Paul J. Gelardi Integrally molded recyclable video tape cassette
GB2257418B (en) * 1991-07-09 1995-03-01 Minnesota Mining & Mfg A video cassette incorporating a slack limiter post
KR970701793A (en) * 1994-08-09 1997-04-12 티. 무라스키 제임스 Reel spring (COATED MAGNETIC TAPE CASSETTE SPRING) of magnetic tape cassette made of magnet steel

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4191345A (en) * 1977-11-24 1980-03-04 Tdk Electronics Company, Limited Tape cassette
EP0074033A2 (en) * 1981-09-03 1983-03-16 BASF Aktiengesellschaft Tape guiding device for magnetic tapes, particularly magnetic video tapes, magnetic tape cassettes with such a tape guiding device and tape guiding elements therefor
DE8335294U1 (en) * 1983-12-09 1984-03-22 Basf Ag, 6700 Ludwigshafen Pressure spring for tape cassettes and tape cassettes with it
GB2137165A (en) * 1983-03-28 1984-10-03 Tdk Corp Magnetic tape cassette
US4496118A (en) * 1982-05-13 1985-01-29 Fuji Photo Film Co., Ltd. Magnetic tape cassette
GB2159795A (en) * 1984-05-31 1985-12-11 Shape Inc Tape cassette pressure flap
DE3443995A1 (en) * 1984-12-01 1986-06-05 Agfa-Gevaert Ag, 5090 Leverkusen Video cassette with insertable tape wiper
EP0187319A1 (en) * 1984-12-24 1986-07-16 BASF Aktiengesellschaft Tape guiding device for tape conveying devices, particularly magnetic tape devices, and tape cassettes provided therewith
EP0217157A1 (en) * 1985-09-02 1987-04-08 Asahi Polyslider Co., Ltd. Tape guide for VTR tape cassette
EP0271978A2 (en) * 1986-12-15 1988-06-22 Sanwa Needle Bearing Co., Ltd. Composite tape guide for a VTR tape cassette
EP0272556A2 (en) * 1986-12-23 1988-06-29 A.T.B. S.p.A. Flat spring structure for magnetic tape cassettes, in particular video cassettes

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5756381Y2 (en) * 1977-07-22 1982-12-04
IT1160772B (en) * 1983-04-14 1987-03-11 Atb Spa CLEANING BRUSH IN PARTICULAR FOR MAGNETIC TAPE AND SIMILAR BOXES
US4620255A (en) * 1984-07-09 1986-10-28 Tandy Corporation Tape cartridge static eliminator

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4191345A (en) * 1977-11-24 1980-03-04 Tdk Electronics Company, Limited Tape cassette
EP0074033A2 (en) * 1981-09-03 1983-03-16 BASF Aktiengesellschaft Tape guiding device for magnetic tapes, particularly magnetic video tapes, magnetic tape cassettes with such a tape guiding device and tape guiding elements therefor
US4496118A (en) * 1982-05-13 1985-01-29 Fuji Photo Film Co., Ltd. Magnetic tape cassette
GB2137165A (en) * 1983-03-28 1984-10-03 Tdk Corp Magnetic tape cassette
DE8335294U1 (en) * 1983-12-09 1984-03-22 Basf Ag, 6700 Ludwigshafen Pressure spring for tape cassettes and tape cassettes with it
GB2159795A (en) * 1984-05-31 1985-12-11 Shape Inc Tape cassette pressure flap
DE3443995A1 (en) * 1984-12-01 1986-06-05 Agfa-Gevaert Ag, 5090 Leverkusen Video cassette with insertable tape wiper
EP0187319A1 (en) * 1984-12-24 1986-07-16 BASF Aktiengesellschaft Tape guiding device for tape conveying devices, particularly magnetic tape devices, and tape cassettes provided therewith
EP0217157A1 (en) * 1985-09-02 1987-04-08 Asahi Polyslider Co., Ltd. Tape guide for VTR tape cassette
EP0271978A2 (en) * 1986-12-15 1988-06-22 Sanwa Needle Bearing Co., Ltd. Composite tape guide for a VTR tape cassette
EP0272556A2 (en) * 1986-12-23 1988-06-29 A.T.B. S.p.A. Flat spring structure for magnetic tape cassettes, in particular video cassettes

Also Published As

Publication number Publication date
CN1011744B (en) 1991-02-20
JPH09384U (en) 1997-06-30
ES2008357A6 (en) 1989-07-16
KR880014557A (en) 1988-12-24
KR0131208B1 (en) 1998-04-18
CN88101591A (en) 1988-10-12
EP0283560A2 (en) 1988-09-28
US4773615A (en) 1988-09-27
DE283560T1 (en) 1989-09-14

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

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Designated state(s): AT DE FR GB IT

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: KOLLER MANUFACTURING CORPORATION (A WISCONSIN CORP

DET De: translation of patent claims
ITCL It: translation for ep claims filed

Representative=s name: JACOBACCI CASETTA & PERANI S.P.A.

17P Request for examination filed

Effective date: 19900109

PUAL Search report despatched

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Effective date: 19920408

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19950328